Pointer help, C++

1) Assuming following three lines of code are executed draw what happens to the computer memory after each step. 10 pts. step 1: int *ptr: step 2: int i=5; memory after step 3: ptr = &i; step 1 after sten 2 after sten 3 I 2) Write a piece of code that will declare an nxn two-dimensional DYNAMIC!!! array of integers of size 16 and then initialize all elements of this array to 0.30 pts